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SSRN 2022年

作者： Lv, Xuelian Fang, Zheng Sun, Yimin Yang, Yongsheng Wang, Xing Chen, Yazhou Qin, Yanmin Li, Na Li, Chen Xu, Jie Bao, Haifeng School of Materials Science and Engineering State Key Laboratory of New Textile Materials & Advanced Processing Technology Wuhan Textile University Wuhan430200 China Hubei Key Laboratory of Plasma Chemistry and Advanced Materials School of Materials Science and Engineering Wuhan Institute of Technology Wuhan430205 China College of Chemistry and Chemical Engineering Wuhan Textile University Wuhan430200 China

We report the facile synthesis of Fe 3 O 4 @Au core/shell nanoechinus through a template-free liquid-liquid interfacial growth reaction. The prepared magneto-plasmonic Fe 3 O 4 @Au core/shell nanoechinus exhibited outstanding SPR absorption in the NIR region, which imparts the nanoechinus with a superior photothermal conversion efficiency of 69.9%, making this material an efficient photothermal agent for antibacterial application. Our results indicated that the magneto-plasmonic Fe 3 O 4 @Au core/shell nanoechinus could effectively kill both Gram negative E. coli and Gram positive S. aureus under 980 nm laser irradiation and kept good photo-stability after multiple photothermal bacteria killing. We envision that the development of advanced strategy for high efficient antibacterial hybrid nanoparticles could have broad applications in therapy and medical devices. © 2022, The Authors. All rights reserved.

关键词： Plasmonics

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Synergistic band convergence and defect engineering boost thermoelectric performance of SnTe

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Journal of materials Science & technology 2021年第27期86卷 204-209页

作者： Ximeng Dong Wenlin Cui Wei-Di Liu Shuqi Zheng Lei Gao Luo Yue Yue Wu Boyi Wang Zipei Zhang Liqiang Chen Zhi-Gang Chen State Key Laboratory of Heavy Oil Processing College of New Energy and MaterialsChina University of PetroleumBeijing 120049PR China State Key Laboratory of Heavy Oil Processing College of ScienceChina University of PetroleumBeijing 102249PR China Centre for Future Materials University of Southern QueenslandSpringfield CentralQueensland 4300Australia School of Mechanical and Mining Engineering The University of QueenslandBrisbaneQueensland 4072Australia State Key Laboratory of Advanced Power Transmission Technology Global Energy Interconnection Research Institute Co.Ltd.Changping DistrictBeijing 102211PR China Beijing Key Laboratory of Failure Corrosion and Protection of Oil/gas Facilities and Department of Materials Science and EngineeringCollege of New Energy and MaterialsChina University of PetroleumBeijing 102249PR China

As an eco-friendly thermoelectric material,Sn Te has attracted extensive *** this study,we use a stepwise strategy to enhance the thermoelectric performance of Sn ***,Ag Cl is doped into Sn Te to realize band convergence and enlarge the band gap of Ag Cl-doped Sn *** Cl-doping also induces dense point defects,strengthens the phonon scattering,and reduces the lattice thermal ***,Sb is alloyed into Ag Cl-doped Sn Te to further optimize the carrier concentration and simultaneously reduce the lattice thermal conductivity,leading to improved thermoelectric dimensionless figure of merit,***,(Sn_(0.81)Sb_(0.19)Te)_(0.93)(Ag Cl)_(0.07)has approached the ZT value as high as~0.87 at 773 K,which is 272%higher than that of pristine Sn *** study indicates that stepwise Ag Cl-doping and Sb-alloying can significantly improve thermoelectric performance of Sn Te due to synergistic band engineering,carrier concentration optimization and defect engineering.

关键词： Thermoelectric SnTe Stepwise optimize Band structure Lattice thermal conductivity

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Imine Based Covalent Adaptable Networks from Diacetone Acrylamide Polymerization

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SSRN 2024年

作者： Chen, Hanghang Hou, Zihao Li, Liqiong Deng, Haoyu Ouyang, Yixue Ye, Dezhan Jiang, Xiancai State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University No.1 Yangguang Avenue Jiangxia District Hubei Wuhan430200 China School of Materials Science and Engineering Wuhan Textile University No.1 Yangguang Avenue Jiangxia District Hubei Wuhan430200 China School of Chemical Engineering Fuzhou University Fuzhou350108 China

The construction of covalent adaptable networks (CANs) without the need for post-modification, complex monomer synthesis routes, or expensive materials is highly desirable for the practical application of dynamic covalent chemistry. In the present study, the commercially available acrylate monomer, diacetone acrylamide (DAAM), was initially polymerized using a traditional radical polymerization method. Subsequently, it was cross-linked with amine agents under hot-processing conditions to form aliphatic imine-based CANs. The resulting materials exhibited glass transition temperatures (Tg) in the range of 95 to 107°C, good thermal stability, mechanical and thermomechanical properties. All samples were amenable to mechanical recycling. Post-recycling, both the tensile strength and Young's Modulus exhibited a slight deterioration, retaining approximately 80% of their original properties. The results from gel content analysis and structural characterization of both pristine and recycled samples indicate that the observed reduction in mechanical properties and Tg (approximately 70°C) can be attributed to a decrease in the degree of cross-linking and the release of aliphatic ketone groups. Furthermore, all samples demonstrated degradability under acidic conditions, attributable to their aliphatic imine structure. By using this facile approach to prepare acrylate-based imine CANs, we establish an important framework for polymer materials that are both reprocessable and biodegradable. © 2024, The Authors. All rights reserved.

关键词： Dynamics

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Highly efficient acousto-optic modulation using nonsuspended thin-fil1m lithium niobate-chalcogenide hybrid waveguides

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Light(Science & Applications) 2022年第6期11卷 1285-1295页

作者： Lei Wan Zhiqiang Yang Wenfeng Zhou Meixun Wen Tianhua Feng Siqing Zeng Dong Liu Huan Li Jingshun Ppan Ning Zhu Weiping Liu Zhaohui Li Department of Electronic Engineering College of Information Science and TechnologyJinan University510632 GuangzhouChina Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems Sun Yat-sen University510275 GuangzhouChina State Key Laboratory for Modern Optical Instrumentation College of Optical Science and EngineeringInternational Research Center for Advanced PhotonicsZhejiang UniversityZijingang Campus310058 HangzhouChina Institute of Semiconductor Science and Technology Guangdong Engineering Technology Research Center of Low Carbon and New Energy MaterialsSouth China Normal University510631 GuangzhouChina Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) 519000 ZhuhaiChina

A highly efficient on-chip acousto-optic modulator is as a key component and occupies an exceptional position in microwave-to-optical *** thin-film lithium niobate is preferentially employed to build the suspended configuration for the acoustic resonant cavity,with the aim of improving the modulation efficiency of the ***,the limited cavity length and complex fabrication recipe of the suspended prototype restrain further breakthroughs in modulation efficiency and impose challenges for waveguide *** this work,based on a nonsuspended thin-film lithium niobate-chalcogenide glass hybrid Mach-Zehnder interferometer waveguide platform,we propose and demonstrate a built-in push-pull acousto-optic modulator with a half-wave-voltage-length product VnL as low as 0.03 V cm that presents a modulation efficiency comparable to that of a state-of-the-art suspended counterpart.A microwave modulation link is demonstrated using our developed built-in push-pull acousto-optic modulator,which has the advantage of low power *** nontrivial acousto-optic modulation performance benefits from the superior photoelastic property of the chalcogenide membrane and the completely bidirectional participation of the antisymmetric Rayleigh surface acoustic wave mode excited by the impedance-matched interdigital transducer,overcoming the issue of low modulation efficiency induced by the incoordinate energy attenuation of acoustic waves applied to the Mach-Zehnder interferometer with two arms in traditional push-pull acousto-optic modulators.

关键词： modulator waveguide interferometer

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Design and therapeutic application of sodium alginate-based hydrogel with biodegradability and catalytic activity

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Science China(Technological Sciences) 2020年第11期63卷 2403-2412页

作者： LI JinFeng ZHAO JiuLong CHEN YongKang ZHENG YuTing ZHOU LingLing ZHAO JiaYan LIU YiYun LIU XiuYing WANG ShiGe College of Science University of Shanghai for Science and TechnologyShanghai 200093China Department of Gastroenterology Changhai HospitalThe Second Military Medical UniversityShanghai 222300China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430073China

How to efficiently treat cancer in a minimally invasive manner has become one of the major focuses of recent developments in *** this research,biodegradable sodium alginate(SA)hydrogel encapsulated with NaHCO_(3)and glucose oxidase(GOX)was synthesized using Fe^(3+)as the crosslinker for the tumor chemodynamic therapy(CDT)and starvation therapy(ST).Material safety assessments revealed that this hydrogel possesses good in vitro and in vivo *** tumor microenvrionment(TME),the Fe^(3+)further reacted with the intracellular glutathione and was transformed into Fe^(2+),which triggered the Fenton reaction with the H_(2)O_(2)within TME and produced abundant highly toxic·OH(hydroxyl radicals)for efficient tumor ***,the GOXcatalyzed the enzymolysis of glucose to consume the nutrient of the tumor and enhance the H_(2)O_(2)level in ***,the CO_(2)bubbles that were generated from the decomposing of NaHCO_(3)promoted the contact between glucose and *** in this research would have important implications for the present status of tumor therapy.

关键词： sodium alginate hydrogel starvation therapy chemical dynamic therapy

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Unsaturated cobalt single-atoms stabilized by silanol nests of zeolites for efficient propane dehydrogenation

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Chinese Journal of Catalysis 2025年第5期72卷 323-333页

作者： Liwen Guo Dao Shi Tianjun Zhang Yanhang Ma Guodong Qi Jun Xu Qiming Sun Innovation Center for Chemical Science College of ChemistryChemical Engineering and Materials ScienceJiangsu Key Laboratory of Advanced Negative Carbon TechnologiesSoochow UniversitySuzhou 215123JiangsuChina State Key Laboratory of New Pharmaceutical Preparations and Excipients College of Chemistry and Materials ScienceHebei UniversityBaoding 071002HebeiChina School of Physical Science and Technology&Shanghai Key Laboratory of High-resolution Electron Microscopy ShanghaiTech UniversityShanghai 201210China National Center for Magnetic Resonance in Wuhan State Key Laboratory Magnetic Resonance and Atomic Molecular PhysicsWuhan Institute of Physics and MathematicsInnovation Academy for Precision Measurement Science and TechnologyChinese Academy of SciencesWuhan 430071HuebiChina

Propane dehydrogenation(PDH)has emerged as a key on-purpose technology for the production of propylene,but it often depends on toxic chromium and expensive platinum catalysts,highlighting the need for environmentally friendly and cost-effective *** this study,we developed a facile impregnation method to fabricate unsaturated Co single-atoms with a tricoordinated Co_(1)O_(3)H_(x) structure by regulating silanol nests in purely siliceous Beta *** PDH catalytic tests and characterizations revealed a positive correlation between the presence of silanol nests and enhanced catalytic ***,the unsaturated Co single-atoms exhibited a carbon deposition rate more than an order of magnitude slower than that of Co ***,the optimized Co_(0.3%)/deAl-meso-Beta catalyst achieved a record-high propylene formation rate of 21.2 mmol_(C3H6) g_(cat)^(-1) h^(-1),with an exceptional propylene selectivity of 99.1%at 550℃.Moreover,the Co_(0.3%)/deAl-meso-Beta catalyst demonstrated excellent stability,with negligible deactivation after 5 consecutive regeneration *** study emphasizes the pivotal role of silanol nests of zeolites in stabilizing and modulating the coordination environment of metallic active sites,providing valuable insights for the design of high-activity,high-stability,and low-cost PDH catalysts.

关键词： Propane dehydrogenation Unsaturated cobalt Single-atoms Silanol nest Zeolite

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TiNB 0.8O 4 Microspheres with Pseudocapacitive Properties for Fast-Charging and Durable Sodium Storage

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SSRN 2024年

作者： Li, Xinyuan Zhang, Tianyi Chen, Zhuo Fan, Hao Hu, Ping Cai, Congcong Zhou, Liang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Hubei Wuhan430070 China Hubei Longzhong Laboratory Wuhan University of Technology Xiangyang Demonstration Zone Hubei Xiangyang441000 China

Titanium niobium oxides (TNO) are promising anode materials for sodium-ion batteries (SIBs) due to their efficient ion diffusion channels. However, their poor electronic conductivity and severe volume expansion during Na+ (de-)intercalation impede the longevity of SIBs. To address these issues, the core@shell TiNb0.8O4/C@C microspheres (TNO/C@C) have been developed to enhance electron conduction and Na+ diffusion. The TNO/C@C, featuring a dual conductive configuration, outperforms pure TNO and other variations like TNO/C and TNO@C that rely solely on either bulk or surface electronic conductors. Thus, the TNO/C@C anode material achieves a fast-charging rate of 200 C, allowing full charging in 2 seconds, and demonstrates long-term stability over 5000 cycles. In-situ Raman analysis reveals a zero-strain feature during sodiation/desodiation, which minimizes structural degradation over repeated cycles. In-situ EIS test indicates low electron resistance, enhancing both the rate capability and stability. Therefore, the bulk and surface dual conducting strategy offers new insights into robust and fast-charging SIBs. © 2024, The Authors. All rights reserved.

关键词： Sodium-ion batteries

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Au23（CR）14 nanocluster restores fibril Aβ's unfolded state with abolished cytotoxicity and dissolves endogenous Aβplaques

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National Science Review 2020年第4期7卷 763-774页

作者： Wenkang Zhang Guanbin Gao Zhongjie Ma Zhuoying Luo Meng He Taolei Sun State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology School of Chemistry Chemical Engineering and Life Science Wuhan University of Technology

The misfolding of amyloid-β（Aβ） peptides from the natural unfolded state to β-sheet structure is a critical step, leading to abnormal fibrillation and formation of endogenous Aβ plaques in Alzheimer's disease（AD）. Previous studies have reported inhibition of Aβ fibrillation or disassembly of exogenous Aβ fibrils in vitro. However, soluble Aβ oligomers have been reported with increased cytotoxicity; this might partly explain why current clinical trials targeting disassembly of Aβ fibrils by anti-Aβ antibodies have failed so *** we show that Au23（CR）14(a new Au nanocluster modified by Cys-Arg（CR） dipeptide) is able to completely dissolve exogenous mature Aβ fibrils into monomers and restore the natural unfolded state of Aβ peptides from misfolded β-sheets. Furthermore, the cytotoxicity of Aβ40fibrils when dissolved by Au23（CR）14is fully abolished. More importantly, Au23（CR）14is able to completely dissolve endogenous Aβ plaques in brain slices from transgenic AD model mice. In addition, Au23（CR）14has good biocompatibility and infiltration ability across the blood–brain barrier. Taken together, this work presents a promising therapeutics candidate for AD treatment, and manifests the potential of nanotechnological approaches in the development of nanomedicines.

关键词： gold nanoclusters Alzheimer’s disease restores fibril Aβ’s unfolded state abolished cytotoxicity dissolves endogenous Aβ plaques

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Piezoelectric ceramics with high piezoelectricity and broad temperature usage range

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Journal of Materiomics 2021年第4期7卷 683-692页

作者： Qinghu Guo Fei Li Fangquan Xia Pengbin Wang Xiaoyi Gao Hua Hao Hanxing Liu Huajun Sun Shujun Zhang State Key Laboratory Silicate Materials for Architectures Center for Smart Materials and Device IntegrationSchool of Materials Science and EngineeringWuhan University of TechnologyWuhan430070China Electronic Materials Research Laboratory Key Laboratory of the Ministry of EducationXi’an Jiaotong UniversityXi’an710049China School of Chemistry and Chemical Engineering University of JinanJinan250022China Institute for Superconducting and Electronic Materials Australian Institute of Innovative MaterialsUniversity of WollongongNew South Wales2500Australia State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and EngineeringWuhan University of TechnologyWuhan430070China

There is a general observation that the Curie temperature and piezoelectric property of the ferroelectric ceramics can be enhanced only at the expense of each other,i.e.,higher piezoelectricity,lower Curie temperature,thus,limits their applications over broad temperature *** this research,Sm-modified 0.15 Pb(Mg_(1/3)Nb_(2/3))O_(3)-(0.85-x)PbZrO_(3)-xPbTiO_(3) ceramics have been studied,where excellent piezoelectric coefficients d33¼720 pC/N,d_(33)*=950 pm/V and high Curie temperature T_(C)=293℃ were simultaneously achieved for x=0.42 composition by designing the morphotropic phase boundary(MPB)with local structural *** particular significance is that a high thermal stability was observed with piezoelectric variation below 20%with temperature up to 280℃,demonstrating that the x=0.42 composition is a good candidate for piezoelectric application over broad temperature range where high temperature stability is *** work provides a good paradigm for designing highperformance piezoelectric ceramics with high thermal stability via a combination of MPB and local structural heterogeneity.

关键词： Piezoelectric ceramics Local structural heterogeneity Electromechanical response Thermal stability

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电场可逆调控二维单层氧化物磁电性能研究

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Science Bulletin 2023年第15期68卷 1632-1639,M0004页

作者：王国鹏胡涛熊奕敏刘学沈胜春王建林车梦倩崔璋璋张莹莹杨鲁懿李正操陆亚林田明亮 School of Physics and Optoelectronics Engineering Anhui UniversityHefei 230601China Hefei National Laboratory Hefei 230028China Information Materials and Intelligent Sensing Laboratory of Anhui Province Institutes of Physical Science and Information TechnologyAnhui UniversityHefei 230601China Department of Physics University of Science and Technology of ChinaHefei 230026China Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230026China Anhui Laboratory of Advanced Photon Science and Technology University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Low Dimensional Quantum Physics Department of PhysicsTsinghua UniversityBeijing 100084China State Key Laboratory for New Ceramics and Fine Processing Key Laboratory of Advanced Materials of Ministry of EducationSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

具有原子层厚度的氧化物磁性材料拥有将二维磁性应用到下一代自旋电子学新兴领域的巨大潜力,引起了研究者的广泛关注.因此,实现二维单层氧化物磁、电性能的磁场和电场调控,为未来低功耗自旋电子器件提供了广阔应用前景.然而,电场调控二... 详细信息

具有原子层厚度的氧化物磁性材料拥有将二维磁性应用到下一代自旋电子学新兴领域的巨大潜力,引起了研究者的广泛关注.因此,实现二维单层氧化物磁、电性能的磁场和电场调控,为未来低功耗自旋电子器件提供了广阔应用前景.然而,电场调控二维单层氧化物磁性报道很少.本工作利用离子液体门电压进行质子掺杂,实现了对二维单层氧化物(SrRuO_(3))_(1)/(SrTiO_(3))_(N)(N=1,3)磁、电性能的电场可逆调控.随着质子掺杂浓度提高,在(SrRuO_(3))_(1)/(SrTiO_(3))_(1)中观察到了从铁磁金属到反铁磁绝缘态相变,并伴随着磁各向异性的转变.理论分析表明,质子掺杂引起的能带结构改变是结构和磁、电性能相变的主要原因.同时,SrTiO_(3)层起到质子筛作用,在质子的演化过程中扮演重要角色.该研究通过电场调控二维单层氧化物的结构和物性,为实现材料的多功能性提供了重要思路,同时也为实现低功耗功能器件提供了应用潜力.

关键词： Electric-field control 2D oxide monolayer magnets Magnetic transition Proton sieve

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